Oil refining tube still



March 29, 1932. c. v. STEWART 1,851,067

OIL REFINING TUBE STILL Filed Nov. y 14, 1930 Jaz/@765051 l.io

Patented Mar. 29, 1932 CARLYLE v. STEWART, OF SPRINGFIELD, OHIO, FOUNDRYCOMPANY, 0F LIMA, OHIO, A

ASSIGNOR TO THE OHIO STEEL CORPORATION OF OHIO OIL REFINING TUBE STILLApplication'led November '14, 1930. Serial No. 495,721.

This invention relates to improvements in return bends for oil refiningstills.

The principal object of the invention is to rovide an improvedconstruction for return end fittings of the character described, in-

cluding a readily removable return bend casting connecting adjacent endsof the pipe sections, and to provide a simple and efiicient constructiondetachably maintaining said return bend casting in its proper position.

The invention may best be understood by reference to t-he accompanyingdrawings, in which Figure 1 is a plan view of a return bend fittingconstructed in accordance with my invention.

Figure 2 is a side view of the fitting shown in Figure 1, showing one ofthe clamping yokes removed therefrom.

Figure 3 is an endview. v

Figure 4 is an enlarged detail of the yoke locking means in perspective.

Referring to details of the drawings, 10,

10 indicate two associated vend fittings of the type utilized in tubestills or the like, adapted to have tubes (not shown) attached theretoin parallel relation.

Connecting the two end pieces 10, 10 together is a casting 11 having asemi-circular passage 12 therein, the ends of which register with theend pieces 10, 10 preferably by means of ball joint connections of theusual form indicated at 13, 13. f

The casting 11 is held in place by a pair of `U-shaped yokes 15, 15, theopen ends of which are pivotally. connected on trunnions 16, 16 mountedon opposite sides of each of the end pieces 10, 10, and preferably castintegrally therewith.

Each of said yokes is provided with a set screw 17 at its upper endwhich engages with a recessed portion 18 formed in the casting 11 inaxial alignmentwith the adjacent end piece 10.

The ends of each yoke 15 may be secured to the trunnions in any suitablemanner, for instance, in the form shown in Figure 4, each of thetrunnions is provided Hwith a collar 19 at its outer end, which collaris of such shape as to permit the yoke to be sprung upon t e and saidtrunnions when swung outwardly at an angle to its normal uprightposition, but retaining the ends of said yoke when the latter is inlocking position as shown in Figures 2 and' 3.

Although I have shown and described one particular embodiment of myinvention, it will be understood that I do not wish to be limited to theexact construction shown and described, but that various changes andmodilications may be made without departing from the spirit and scope ofmy invention.

I claim as my'invention:

1.. In a return bendv fitting, a pair of tube end pieces, a connectingpiece having a semicircular passage communicating with opposlte ends ofsaid tube end pieces, a pair of trunnions on opposite sides ofV saidtube end pieces, securing means comprising a yoke pivotally connected tosaid trunnions and spanning said connecting piece, clamping means onsaid yoke disposed centrally of said connecting piece in substantialaxial alignment with its respective tube end piece, said yoke andclamping means being arranged to swing laterally, as a unit whensaidclamping means 1s disengaged, lugs on the ends of said trunnions forretaining the respective ends of said yoke thereon while the latter isin clamped position on said return bend fitting, the said yoke endshaving apertures therein registering with said lugs so as to permitendwise removal of said yoke ends when the `lyoke is swung out oflocking position.

2. In a pipe fitting, a tube end piece and a connecting piece having acurved passage communicating with` the end of said tube end' piece, apair of trunnions on opposite sides of and integral with said tube endpiece,

securing means comprising a yoke spanning said connecting piece andpivotally connectible to said trunnions by flexing said yoke, clampingmeans on said yoke for engaging said connecting piece, said yoke andclamping means being arranged to swing laterally as a unit when saidclamping means is disengaged, lugs integral with the ends of saidtrunnions for retaining the respective ends of said yoke thereon whilethe latter is in clamped position on said connecting piece, yoke endshaving apertures therein registering with said lugs when the yoke isswim out of locking position so as to permit endwise removal of saidyoke ends from said trunnions.

5 Signed at Springfield, Ohio, this 12th day of November, 1930.

CARLYLE V. STEWART.

